Bump to Elixir 1.15 (#1989)

lib/livebook/intellisense.ex

@@ -534,9 +534,7 @@ defmodule Livebook.Intellisense do
         name -> name
       end
 
-    # TODO: remove the first check on Elixir v1.15.0
     is_otp? =
-      app == :erts or
       case :code.which(app || module) do
         :preloaded -> true
         [_ | _] = path -> List.starts_with?(path, :code.lib_dir())

test/livebook/runtime/evaluator_test.exs

@@ -505,8 +505,6 @@ defmodule Livebook.Runtime.EvaluatorTest do
                       %{column: 4, details: _, end_line: 20, line: 19, status: :failed}}
     end
 
-    # TODO: Run this test on Elixir v1.15+
-    @tag :skip
     test "multiple assertions at once", %{evaluator: evaluator} do
       code = ~S'''
       defmodule Livebook.Runtime.EvaluatorTest.DoctestsMiddle do

versions

@@ -1,4 +1,4 @@
-elixir="1.15.0-rc.2"
+elixir="1.15.0"
 otp="25.3.2"
 openssl="1.1.1s"
 rebar3="3.22.0"